scholarly journals Satellite Geodesy Captures Offset Magma Supply Associated With Lava Lake Appearance at Masaya Volcano, Nicaragua

2018 ◽  
Vol 45 (6) ◽  
pp. 2669-2678 ◽  
Author(s):  
K. J. Stephens ◽  
C. Wauthier
Keyword(s):  
Lava Lake ◽  
Satellite Geodesy ◽  
Masaya Volcano ◽  
Magma Supply

scholarly journals Tracking Formation of a Lava Lake From Ground and Space: Masaya Volcano (Nicaragua), 2014-2017

2018 ◽  
Vol 19 (2) ◽  
pp. 496-515 ◽  
Author(s):  
Alessandro Aiuppa ◽  
J. Maarten de Moor ◽  
Santiago Arellano ◽  
Diego Coppola ◽  
Vincenzo Francofonte ◽  
...  
Keyword(s):  
Lava Lake ◽  
Masaya Volcano

Multiparametric measurements of the lava lake at Masaya volcano

2020 ◽  
Author(s):  
Tom D. Pering ◽  
Tehnuka Ilanko ◽  
Thomas C. Wilkes ◽  
Leigh Stanger ◽  
Jon R. Willmott ◽  
...  
Keyword(s):  
Near Infrared ◽  
Low Cost ◽  
Lava Lake ◽  
Optical Absorption Spectroscopy ◽  
Raspberry Pi ◽  
High Time Resolution ◽  
Spherical Cap ◽  
Video Footage ◽  
Masaya Volcano ◽  
Gas Measurements

<p>The recent lava lake activity at Masaya volcano, Nicaragua, provided an ideal and rare moment to investigate dynamic and rapid magmatic processes. A multiparametric and low-cost approach which combined high time resolution gas, thermal, and video of the rapidly convecting lava lake was used. Gas measurements were conducted using DOAS (Differential Optical Absorption Spectroscopy) by traversing beneath the plume and Raspberry Pi ultraviolet (UV) cameras. Temperature measurements of the lake were made using a Raspberry Pi near infrared thermal camera approach. Video footage of the lava lake allowed the determination of the unusually rapid lake velocity, and crucially the generation of activity statistics such as location and frequency of the frequent small (spherical-cap) bubble bursts at the surface. Contemporaneously acquired UV and thermal datasets also allowed the assessment of a detected oscillation in the sulphur dioxide degassing data. By combing all these data streams, the unique fluid dynamics of lava lake activity at this location is highlighted.</p>

scholarly journals A Rapidly Convecting Lava Lake at Masaya Volcano, Nicaragua

2019 ◽  
Vol 6 ◽  
Author(s):  
Tom D. Pering ◽  
Tehnuka Ilanko ◽  
Thomas C. Wilkes ◽  
Rebecca A. England ◽  
Siân R. Silcock ◽  
...  
Keyword(s):  
Lava Lake ◽  
Masaya Volcano

scholarly journals SO<sub>2</sub> and BrO emissions of Masaya volcano from 2014–2020

2020 ◽  
Author(s):  
Florian Dinger ◽  
Timo Kleinbek ◽  
Steffen Dörner ◽  
Nicole Bobrowski ◽  
Ulrich Platt ◽  
...  
Keyword(s):  
Time Series ◽  
Linear Trend ◽  
Lava Lake ◽  
Emission Flux ◽  
Plume Height ◽  
So2 Emission ◽  
Molar Ratios ◽  
Masaya Volcano ◽  
Emission Fluxes ◽  
Time Periods

Abstract. Masaya volcano (Nicaragua, 12.0° N, 86.2° W, 635 m a.s.l.) is one of the few volcanoes hosting a lava lake, today. We present continuous time series of SO2 emission fluxes and BrO / SO2 molar ratios in the gas plume of Masaya from March 2014 to March 2020. This study has two foci: (1) discussing the state of the art of long-term SO2 emission flux monitoring on the example of Masaya and (2) the provision and discussion of a continuous dataset on volcanic gas data unique in its temporal coverage, which poses a major extension of the empirical data base for studies on the volcanologic as well as atmospheric bromine chemistry. Our SO2 emission flux retrieval is based on a comprehensive investigation of various aspects of the spectroscopic retrievals, the wind conditions, and the plume height. Our retrieved SO2 emission fluxes are on average a factor of 1.4 larger than former estimates based on the same data. We furthermore observed a correlation between the SO2 emission fluxes and the wind speed when several of our retrieval extensions are not applied. We make plausible that such a correlation is not expected and present a partial correction of this artefact via applying dynamic estimates for the plume height as a function of the wind speed (resulting in a vanishing correlation for wind speeds larger than 10 m/s). Our empirical data set covers the three time periods (1) before the lava lake elevation, (2) period of high lava lake activity (December 2015–May 2018), (3) after the period of high lava lake activity. For these three time periods, we report average SO2 emission fluxes of 1000 ± 200 t d−1, 1000 ± 300 t d−1, and 700 ± 200 t d−1 and average BrO / SO2 molar ratios of (2.9 ± 1.5) × 10−5, (4.8 ± 1 : 9) ×10−5, and (5.5 ± 2–6) × 10−5. These variations indicate that the two gas proxies provide complementary information: the BrO / SO2 molar ratios were susceptible in particular for the transition between the two former periods while the SO2 emission fluxes were in particular susceptible for the transition between the two latter time periods. We observed an extremely significant annual cyclicity for the BrO / SO2 molar ratios (amplitudes between 1–4–2–6 × 10−5) with a weak semi-annual modulation. We suggest that this cyclicity might be a manifestation of meteorological cycles. We found an anti-correlation between the BrO / SO2 molar ratios and the atmospheric water concentration (correlation coefficient of −47 %) but in contrast to that neither a correlation with the ozone mixing ratio (+21 %) nor systematic dependencies between the BrO / SO2 molar ratios and the atmospheric plume age for an age range of 2–20 min after the release from the volcanic edifice. The two latter observations indicate an early stop of the autocatalytic partial transformation of bromide Br− solved in aerosol particles to atmospheric BrO. Further patterns in the BrO / SO2 time series were (1) a step increase by 0.7 × 10−5 in late 2015, (2) a linear trend of 1.2 × 10−5 per year from December 2015 to March 2018, and (3) a linear trend of −0.8 × 10−5 per year from June 2018 to March 2020. The step increase in 2015 coincided with the 55 elevation of the lava lake and was thus most likely caused by a change in the magmatic system. The linear trend between late 2015 and early 2018 may indicate the evolution of the magmatic gas phase during the ascent of juvenile gas-rich magma whereas the linear trend from June 2018 on may indicate a decreasing bromine abundance in the magma.

Pulsatory magma supply to a phonolite lava lake

2009 ◽  
Vol 284 (3-4) ◽  
pp. 392-398 ◽  
Author(s):  
Clive Oppenheimer ◽  
Alexandra S. Lomakina ◽  
Philip R. Kyle ◽  
Nick G. Kingsbury ◽  
Marie Boichu
Keyword(s):  
Lava Lake ◽  
Magma Supply
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